In article <e0bo61$2mm$1@online.de>, Friedhelm Neyer <Friedhelm.Neyer@t-online.de> wrote:
>
> I take 6 disks (LUNs)from a san box (listed by lspv as dlmfdrv...).
> Give the 6 disks a pvid ...
> Now I create a volumegroup of three LUNs, create a logical volume
> and mirrored this lv to the other three disks.
> So far so good, now I try to create a filesystem (jfs2) on the
> previously defined lv, but system says, that there is no enough free
> space to create a filesystem.
> Correct, a lsvg <vgname> show me, there are no free PPs at all ...
>
> What is going on here, no other filesystem resides in this vg nor the lv
> was used for other filesystem...
>
> When I remove the lv, I see the whole number of free PPs ...
>
> Again I create the lv, same result - no more free PPs

You need to leave at least one PP free for the jfs (or jfs2) log LV.

If that does not help, then please post output of:

# lsvg -l <vgname>

and

# lsvg <vgname>

-Dan